



Extra Observations 



OF Magnetometers, April 13 



-18, 



1845. 







105 



FILAR 



Balance 



Gbtt. 







BiFILAR 



Balance 



Gbtt. 







Bifilar 



Balanck 



■rected. 



Corrected. 



Mean 

 Time. 



Declination. 



Corrected. 



Corrected. 



Mean 

 Time. 



Declination. 



Corrected. 



Corrected. 



«i So. Div. 



Min. 



Mic. Div. 



d. 



h. 



Min. 







Min. 



Sc. Dir. 



Min. 



Mic. DiT. 



d. 



h. 



Min. 





Min. 



Sc. Div. 



iiin. 



Mic. Div. 



2 363-4 







13 



15 







29 



591-3 







14 



6 



20 



,25 11 



68 



22 



549-3 



23 



621-1 



3 405-8 



33 



83-0 





* 



30 



24 5317 



32 



559-3 



33 



267-6 







30 



09 



79 



32 



550-0 



33 



622-7 



3 391-7 















34 



539-0 











45 



07 



81 



47 



535-8 



48 



624-0 













35 



48-36 



37 



519-9 



38 



251-9 







55 



04 



12 



57 



541-0 



58 



630-4 



3 419-7 



38 



155-7 











39 



525-0 







14 



7 







25 00 



57 



2 



543-8 



3 



633-7 



3 430-9 











40 



45-04 















10 



24 57 



04 



12 



555-9 



13 



624-3 













41 



45-20 



42 



525-7 



43 



266-0 







15 



24 59 



36 



17 



564-6 



18 



618-8 



4 397-0 



43 



213-6 











44 



516-4 











25 



25 03 



48 



27 



556-0 



28 



612-5 



4 400-2 











45 



43-89 



47i 



505-9 



48i 



280-8 







50 



07 



81 



52 



536-8 



53 



599-1 













50 



44-19 



52 



508-9 



53 



299-0 



14 



8 







06 



74 



2 



536-7 



3 



593-3 



4 414-4 



48 



224-5 











54 



515-4 











35 



10 



06 



37 



533-4 



38 



576-9 



4 422-2 











55 



45-07 



57 



521-5 



58 



317-4 



14 



9 







11 



64 



2 



531-7 



3 



570-8 

















59 



525-2 







14 



11 







12 



36 



2 



530-3 



3 



512-1 



5 432-0 



53 



224-8 



13 



16 







47-19 



2 



528-0 



3 



288-6 







30 



12 



78 



32 



529-0 



33 



501-7 



£ 414-5 









* 



5 



49-57 



7 



526-1 



8 



369-5 



14 



12 







16 



43 



2 



531-1 



3 



470-5 













10 



50-18 



12 



519-8 



13 



392-7 







11 



15 



56 



12 



531-2 



13 



469-8 



5 406-9 



58 



1855 







15 



24 57-24 



17 



517-6 



18 



403-9 







20 



14 



40 



22 



530-2 



23 



471-0 



5 426-6 











20 



25 00-20 



22 



519-6 



23 



412-6 







30 



12 



38 



32 



530-9 



33 



475-1 



427-5 











30 



02-32 



32 



518-2 



33 



434-2 



14 



13 







12 



55 



2 



535-2 



3 



483-5 



437-9 

 453-2 



3 



8 



216-0 

 239-5 







40 



02-66 

 08-36 



42 

 47 



526-1 

 514-9 



43 



48 



443-0 

 441-9 

























45 



15 



9 







25 02 



99 



2 



549-9 



3 



540-2 



1 482-8 



13 



220-8 







50 



07-78 



52 



509-2 



53 



441-4 







25- 



06 



66 



27 



543-6 



28 



535-3 



1 487-3 







13 



17 





 10 



25 06-46 

 24 58-42 



2 

 12 

 14 



524-5 

 525-3 

 530-8 



3 

 13 



448-2 

 4550 



15 



10 







07 



57 



2 



539-9 



3 



532-9 



I 4783 



18 



1840 







1 KJ 



18 



8 







25 08 



32 



2 



543-9 



3 



593-6 



1 475-2 











15 



25 00-80 



17 



525-3 



18 



457-7 







16 



04 



68 



17 



536 3 



18 



6080 



475-5 



23 



181-5 











22 



534-2 



23 



459-1 







20 



03 



84 



22 



535-6 



23 



611-2 



484-0 











25 



24 59-01 



27 



538-8 



28 



464-4 







25 



05 



15 



27 



540-4 



28 



610-9 



484-6 



28 



162-5 







35 



25 04-10 



37 



535-3 



38 



476-3 







30 



04 



69 



32 



548-9 



33 



604-1 



476-6 











45 



02-96 



47 



540-1 



48 



487-1 







35 



07 



81 



37 



547-3 



38 



594-9 













55 



03-09 



57 



533-4 



58 



493-3 







40 



09 



84 



42 



541-8 



43 



5833 



469-3 



33 



113-4 



13 



18 







02-99 



2 



537-0 



3 



499-9 







45 



08 



95 



47 



539-1 



48 



579-6 



460-1 











10 



05-09 



12 



536-8 



13 



506-5 







55 



05 



63 



57 



530-6 



58 



577-3 













20 



07-78 



22 



532-0 



23 



511-0 



18 



9 







03 



50 



2 



531-7 



3 



574-2 



455-4 



38 



830 



13 



19 







07-38 



2 



531-0 



3 



518-5 







5 



01 



93 



7 



532-2 



8 



570-7 



455-6 











15 



05-00 



17 



530-0 



18 



517-1 







10 



25 00 



38 



12 



535-4 



13 



567-0 









13 



20 







03-23 



2 



539-8 



3 



509-6 







15 



24 59 



32 



17 



537-5 



18 



563-1 



445-0 



43 



64-4 







10 



09-35 



12 



532-0 



13 



514-6 







20 



25 00 



10 



22 



537-4 



23 



559-0 



453-2 











20 



08-31 



22 



533-5 



23 



519-4 







35 



01 



68 



37 



531-0 



38 



549-6 









13 



21 







06-59 



2 



522-7 



3 



523-7 







40 



02 



35 



42 



529-5 



43 



549-6 



433-9 



48 



- 0-8 























45 



02 



25 



47 



529-2 



48 



549-4 



445-9 







14 



•2 







25 20-69 



2 



517-6 



3 



560-8 







55 



01 



68 



57 



533-1 



58 



548-1 













30 



20-29 



32 



529-0 



33 



564-9 



18 



10 







01 



59 



2 



533-1 



3 



546-6 



434-3 



53 



-27-4 



14 



3 







20-50 



2 



5331 



3 



569-1 







15 



03 



90 



17 



530-8 



18 



550-3 



408-7 







14 



4 







14-50 



2 



538-6 



3 



650-6 



18 



11 







08 



80 



2 



538-0 



3 



550-6 













10 



08-99 



12 



556-3 



13 



667-2 



18 



13 







10 



16 



2 



539-7 



3 



539-1 



382-2 



58 



- 2-4 







15 



03-20 



17 



571-5 



18 



669-8 







10 



18 



38 



12 



542-7 



13 



527-8 



310-? 











20 



05-79 



22 



581-2 



23 



667-7 







15 



15 



98 



17 



546-5 



18 



511-7 



291-5 



3 



- 4-5 







25 



10-83 



27 



569-4 



28 



665-6 







21 



12 



29 



22 



550-4 



23 



497-6 



318-8 











30 



15-71 



32 



546-6 



33 



654-7 







25 



10 



11 



27 



552-1 



28 



489-8 



346-8 



8 



-20-5 







35 



17-02 



37 



544-7 



38 



643-2 







30 



08 



79 



32 



553-0 



33 



482-5 



386-9 











40 



17-71 



42 



539-6 



43 



633-5 







35 



09 



03 



37 



549- 1 



38 



478-5 













45 



17-80 



47 



537-5 



48 



625-4 







40 



08 



92 



42 



544-2 



43 



476-4 



367-7 



13 



19-4 







50 



17-80 



52 



538-7 



53 



617-4 







45 



08 



12 



47 



538-6 



48 



476-1 



369-2 







14 



5 







16-87 



2 



541-8 



3 



603-5 







50 



07 



15 



52 



536-4 



53 



475-6 













10 



16-80 



12 



538-2 



13 



600-4 



18 



14 







07 



89 



2 



536-2 



3 



477-7 



363-5 



18 



33-7 







40 



18-23 



42 



562-8 



43 



587-3 







30 



03 



16 



32 



535-5 



33 



476-0 



393-6 











50 



18-20 



52 



556-2 



53 



598-6 



18 



15 







00 



94 



2 



525-1 



3 



4820 



1 458-8 



23 



146-2 







55 



14-91 



57 



546-1 



58 



610-0 







10 



00 



91 



12 



524-0 



13 



487-7 



469-2 







14 



6 







11-59 



2 



543-5 



3 



619-8 







20 



01 



61 



22 



522-4 



23 



492-9 



586-0 



28 



255-7 







10 



11-30 



12 



555-9 



13 



618-6 







30 



02 



05 



32 



524-1 



33 



496-8 



BiFILA 



R. ^: 



=0-000140. 







Balance. kz= 



0-000010. 







* See notes on the Aurora Borealis 



, after 



the Extra Obeervati 



9ns of Ma 



gneton 



leters. 











April 13d i4h 57m 30s. The 



loriz 



ontal ( 



;omponent diminish 



ed rapid 



y, and 



the bifilar scale went ou 



t of the field 



3f the reading \ 



elescope. 



April 13* IS*" 0™. The arms 



of tl 



le bifi 



lar torsion circle \v 



ere turn 



ed thr 



ough 1° 12' ; 



;hev were t 



unipd at IS^" 



46™ to within 



5'-5 of their 



:iginal position, and at 21h 30" 



> to t 



leir 01 



iginal position : al 



the obs 



ervati 



3US made between IS*" 0"" 



and 21i> 30n. 



have been con 



ected to the 



armal reading of the torsion circle. 



Seei 



ntroduction, p. xxxi 



i. 















MAG. AND MET. OBS. 1845. 



2d 



